Necticut



WIF.MOORE March 8, 1932.

DOORCHECK Filed Nov. 12, 1928 HVVENTUR. IMF/ 70035.

%Wd/W ATTORNEYS Patented Mar. 8, 1932 PATENT FFICE WALLACE F. MOORE, OFMERIDEN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARD- VTARE CORPORATION,OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NECTICUT DOORCHECKApplication-filed November 12, 1928. Serial no. 318,675.

My invention relates to door checksand closures, and has specialreference to such devices for use on screen and other doors of lightconstruction.

The principal objects of the invention are to provide a device of thischaracter which is simple, strong and durable in construction andattractive in appearance; which may be easily and quickly installed invarious posi tions to meet different requirements; and

which may be easily adjusted to vary both the door closing and checkingactions thereof.

These and other objects of my invention v and features whereby they maybe attained,

will be clearly understood from the following description andaccompanying drawings, in which:

Figure 1 is a side view of a portion of a door and its casing with myimproved check trated in the drawings as applied to a door 2 and a doorcasing 4. As shown, the device is provided with a cylinder 6 and apiston 8 having a rod 10 extending out through one end of the cylinder.This end of the cylinder has a cap 12 screw-threaded thereon andprovided with a central aperture through which the piston rod slidesduring the operation of the device, the cap being provided with an airvent 14. The other or outer end of the cylinder is closed by a cap 16.

As shownin the drawings, the outer end of the piston rod may bepivotally connected with the door, and the outer end of the cylinder maybe pivotally connected with'the door casing, or such pivotal connectionsmay be reversed. In either case, however, the piston and cylinder serveto retard or check the closing of the door, and in such devices it isdesirable to provide means for varying this checking action. Inaccordance with my invention, the means provided for varying said thebracket arms.

checking action is of simple construction and easily adjustable. Asshown, the outer end of the cylinder is provided with an inturned flange18 forming a restricted opening. This flange is in adjustable contactwith a washer 20 of leather or similar material at the bottomof the cap.The outer surface of this end of the cylinder is provided with alongitudinally extending groove 22 forming a vent leading from the innerend of the cylinder to a point beyond the inner edge of the cap. Withthis construction, by turning the cylinder with relation to the cap 16,the escape of air through the vent formed by the groove 22 maybe'varied, and thus the door checking action of the piston and cylindermay be varied as desired.

In the illustrated construction the outer end of the cylinder ispivotally mounted on a bracket 24, and a door closing spring 25 isassociated with this end of the cylinder and the bracket. The bracket isU-shaped, having two horizontally projecting arms and a verticalconnecting portion. The pivotal mounting of the outer end of thecylinder on the bracket comprises a shaft 26 of octagonal form which hasits ends extended through and secured by pins 27 to sleeves or bushings28, said bushings having reduced inner ends mounted to turn in aperturesin the ends of The spring 25 is coiled about the shaft 26 betweenannular dogs 30 and 32 surrounding the shaft and arranged adjacent theinner sides of the bracket arms, the aperture-in the dog 30 throughwhich the shaft extends being of a shape to fit the shaft so as toprevent relative rotation of the shaft and dog, and the aperture in thedog 32'being cylindrical so as to permit relative rotation of the shaftand dog. One end of the coil spring 25 is secured to the fixed dog 30,and the other end of the spring is hooked over the upper arm of thebracket. Each end of the shaft 26 is reduced in diameter andscrew-threaded so that a nut 34 may be screwed on either end. 'The outerend. of the cylinder may be secured on either end of the shaft 26 asdesired. by means of an outwardly projecting lug 36 on the outer cap 16which is provided with an octagonal aperture for receiving the desiredend of the shaft, the lug 36' being held against the outer end of theadjacent sleeve or bushing 28 by means of a washer and the nut 34.

The outer end of the piston rodlO is pivotallyconnected by means of apin 38 with a bracket 40. In the drawings, the bracket- 24: for theouter end of the cylinder is shown secured by screws to the inner sideof the door casing, and the bracket 40 for the outer end of the pistonrod to the upperlportion of the door, the device being mounted on theopposite side of the door from the hinges, one of the door hinges'beingindicated at 41, I In case it is desired to ins'tallthedevice on a doorthat opens in the opposite direction from that shown in the drawings,the bracket 24 maybe reversed in position and the outer end cap 16 ofthe cylinder attached to the other end of the shaft 26. Also, suchreversal'm ay be accomplished by turning the shaftat anyone of a.plurality of different positions with relation to-theshaft, and a springtending when under tension to turn the shaft in one direction.

*In testimony whereof, I have signed my name to this specification thiseighth day of November, 1928. f f -WALLACE F. .MOORE.

whole check-over so that the cylinder is below the'bracket.,Furthermore, if desired,

the bracket for the outer end of the cylinder may be attached to thedoor, while the bracket for the end of the piston rod maybe attached tothe door casing above the door.

The tension of the spring 25 in my 1mproved device, may be varied tovary the door I closing action thereof by merely detaching the lug 36from the end of the shaft 26, and

turning the shaft to a different angular position and then re-attachingthe lug to the shaft, the polygonal form of the shaft perinitting thisto be accomplished.

As will be evident to those skilled in the art, my invention permitsvarious modifications without departing from the spirit thereof of'thescope of the appended claims.

What I claim is: j r 'j 1; A pneumatic check comprising a cylinderhaving aninwardly turned flange at its outer end to provide a restrictedopening, a

.piston'having a rod projecting out through one end of the cylinder, acap screw-threaded on the other or outer end of the cylinder, and awasher of yieldable material in thecap for adjustableengagement by saidflange of the cylinder, said cylinder having a groove in its outersurface extending from the outer end thereof to a point outside of saidcap to provide an air vent adjustable by relatively turning said cap andcylinder.

2. A door check having, in combination, a I

structureoomprising a cylinder and a piston W1t-h1n the cylinder havinga rod projecting out through one end of the cylinder, a hracket, pivotalconnections between one end of 7 said structure and bracket'oomprising ashaft, bushings secured to the shaft mounted, .to turn in the bracket,and a, spring tending when underf tension to turn the shaft and bushingsin one direction, 1

3. A door checkfhaving, in combination, a structure'comprising acylinder and a pis-

